It's not a ripped comercial DVD. It's partly iDVD and partly a "ripped" (=copied) homemaded DVD_________________Please bear with me if I occasionally swap z and y. At home I have a german keyboard and at work I have to use an american/uk one.

If you have Tiger, you would see that his version of DVD Player didn't do that.

I know. I had Tiger last week. So I raised this as a bug._________________Please bear with me if I occasionally swap z and y. At home I have a german keyboard and at work I have to use an american/uk one.

No. And I am not sure it still true.
I have DVD folders that I could not read with DVDPlayer before, and I can now.
Maybe because the last MacOS version have changed something, or I have done something I dont know.

I just had the case where DVD Player did run my "handcrafted" DVD. Very strange._________________Please bear with me if I occasionally swap z and y. At home I have a german keyboard and at work I have to use an american/uk one.

The problem seems to be that myDVDEdit cannot successfully open the 10.5.6 version of DVD Player, with some, perhaps all, VIDEO_TS folders that otherwise play correctly in the player:

1) When I try to test any video using the Test command in myDVDEdit, DVD Player opens and then immediately aborts with error 'nilP'.

2) When I then reopen DVD Player and open the same VIDEO_TS folder that caused it to abort, it works as it should! I can then close the video without quitting DVD Player, go back to myDVDEdit, and use the Test command successfully! But if I quit DVD Player before going back to myDVDEdit, the Test command causes the player to abort right away.

So it seems that the problem is in the interaction between myDVDEdit and DVD Player, and not between the latter and the video being tested.

Unlike with the previous version of DVD Player, I do not have problems any more to open my projects on my Mac.

Prompted by this statement to think about what version I was running, I've apparently solved the problem! When myDVDEdit tried to run DVD Player when the latter was not already open, the run or open command would, for whatever reason, be sent to a copy of version 4.0 of the player. Moreover, there was only one copy of v. 4.0, among the several I have on my system, that would not, for whatever reason, announce that it was the wrong version for the system (Leopard) and would instead give the "nilP" error message I mentioned! But that was precisely the one that was on my startup disk, in a sub-folder of the Applications folder. A copy of version 5.0.1 is in the Applications folder itself, rather than a sub-folder thereof, but that was not the one that was opening!

Perhaps unfortunately for my ability to do further research, I've thrown away that copy of 4.0, and the copy of that copy that I made on another disk that then gave the same "nilP" error message when I tried to open it. The other copies of 4.0 and 4.65 don't open at all, and the error message regarding them comes from the Finder rather than from the application.

Whatever message myDVDEdit sends to run DVD Player in response to the Test with DVD Player command winds up opening a correct version. Incidentally, when I type

Code:

open -a DVD\ Player

in Terminal, it also opens v. 5.0.1, and when I try to open a copy of 4.x by dragging its path to the command line, I get the message,

Code:

LSOpenFromURLSpec() failed with error -10825.

Anyway, I don't expect to have the problem anymore and it's unlikely too many other users, if any, will have a similarly bad copy of v. 4.x lying around in a location that would cause the same problem, so you may not have to do anything about it.